Timeline for Transitive embedding of the projective plane $\Bbb R P^2$ into the $4$-sphere
Current License: CC BY-SA 4.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Apr 27, 2019 at 20:02 | vote | accept | M. Winter | ||
| Apr 25, 2019 at 19:19 | comment | added | Ryan Budney | Here is a little further discussion of the embedding Ben describes: ldtopology.wordpress.com/2012/07/12/… | |
| Apr 25, 2019 at 13:47 | history | edited | Ben McKay | CC BY-SA 4.0 |
added more details on the metric and the subspace
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| Apr 25, 2019 at 9:29 | comment | added | Vít Tuček | You mean preserving the trace of the symmetric matrix, not $x^2 + y^2 + z^2$. (What are $x, y, z$ anyway?) The only detail left is for which scalar product $G$ on $\mathrm{Sym}^2 \mathbb{R}^3$ the conjugation by matrices from $\mathrm{O}(3)$ belongs to $\mathrm{O}(G)$. | |
| Apr 25, 2019 at 8:10 | history | answered | Ben McKay | CC BY-SA 4.0 |